--- product_id: 13521976 title: "491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/491055/Champion RC12Y" brand: "briggs & stratton" price: "$16.73" currency: USD in_stock: true category: "Briggs & Stratton" url: https://www.desertcart.us/products/13521976-491055-2pk-spark-plug-2-pack-replaces-805015-72347-491055 store_origin: US region: United States of America --- # Copper core for superior conductivity Optimized for lawn mower engines OEM precision fit for seamless installation 491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/491055/Champion RC12Y **Brand:** briggs & stratton **Price:** $16.73 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your mower’s potential—because your lawn deserves the best! ## Quick Answers - **What is this?** 491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/491055/Champion RC12Y by briggs & stratton - **How much does it cost?** $16.73 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/13521976-491055-2pk-spark-plug-2-pack-replaces-805015-72347-491055) ## Best For - briggs & stratton enthusiasts ## Why This Product - Trusted briggs & stratton brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Double the Value:** Two-pack bulk packaging means you’re always ready for maintenance without extra trips. - • **Trusted by Thousands:** Rated 4.7 stars by nearly 3,000 users who demand reliability and longevity. - • **Plug & Play Precision:** Genuine OEM replacement ensures perfect compatibility with Briggs & Stratton and Kohler engines—no guesswork needed. - • **Power Your Lawn Like a Pro:** Copper core spark plugs deliver consistent, high-performance ignition every time. - • **Keep Your Green Space Pristine:** Specifically engineered for lawn mowers, these plugs maximize engine efficiency and reduce downtime. ## Overview The Briggs & Stratton 491055-2pk Spark Plug set includes two genuine OEM spark plugs designed for optimal performance in lawn mower engines. Featuring a copper core for enhanced conductivity and precision fit for a wide range of Briggs & Stratton and Kohler models, these plugs ensure reliable ignition and engine efficiency. Highly rated by thousands of users, this two-pack offers great value and peace of mind for professional-grade lawn care. ## Description Includes (2) 491055 Spark PlugsNew, Bulk PackedGenuine OEM Replacement Part # 491055-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Kohler CH11S-16119, CH11S-16122, CH11S-16124, CH11S-16126, CH11S-16127, CH11S-16128, CH11S-16134, CH11S-16139, CH11S-16141, CH11S-16142, CH11-1626, CH11-1627, CH11-1629, CH11T-1630, CH12.5-1901, CH12.5-1902, CH12.5-1903, CH12.5-1904, CH12.5-1905, CH12.5-1907, CH12.5-1909, CH12.5-1910, CH12.5-1911, CH12.5-1912, CH12.5-1913, CH12.5-1914, CH12.5-1916, CH12.5-1917, CH12.5-1918, CH12.5-1919, CH12.5-1920, CH12.5-1921, CH12.5-1922, CH12.5-1923, CH12.5-1924, CH12.5GS-1926, CH12.5S-1928, CH12.5S-1929, CH12.5S-1931, CH12.5S-1932, CH12.5S-1934, CH12.5S-1935, CH12.5S-1936, CH12.5S-1937, CH12.5T-1927, CH13PS-22523, CH13PS-22536, CH13PT-22513, CH13PT-22520, CH13PT-22535, CH13S-22508, CH13S-22511, CH13S-22517, CH13S-22531, CH13S-22533, CH13S-22534, CH13S-22540, CH13ST-22512, CH13ST-22514, CH13T-22519, CH13T-22525, CH13T-22532, CH14-1800, CH14-1801, CH14-1802, CH14-1803, CH14-1804, CH14-1805, CH14-1807, CH14-1809, CH14-1810, CH14-1811, CH14-1812, CH14-1813, CH14-1816, CH14-1817, CH14-1818, CH14S-1827, CH14S-1828, CH14S-1829, CH14S-1830, CH14S-1831, CH14S-1832, CH14S-1835, CH14S-1838, CH14ST-1836, CH14ST-1842, CH15GS-44514, CH15GS-44524, CH15GS-44526, CH20-64520, CH20-64521, CH20-64522, CH20-64523, CH20-64524, CH20-64525, CH20-64526, CH20-64527, CH20-64528, CH20-64529, CH20-64530, CH20-64531, CH20-64532, CH20-64533, CH20-64535, CH20-64536, CH20-64537, CH20-64538, CH20-64539, CH20-64540, CH20-64541, CH20-64542, CH20-64543, CH20-64544, CH20-64545, CH20-64546, CH20-64547, CH20-64548, CH20-64549, CH20-64550, CH20-64551, CH20-64554, CH20-64555, CH20-64556, CH20-64558, CH20-64559, CH20-64560, CH20-64564, CH20-64565, CH20-64566, CH20-64567, CH20-64585, CH20-64588, CH20-64590, CH20-64593, CH20-64596, CH20-64598, CH20-64608, CH20-64609, CH20S-64561, ## Features - Sold on desertcart ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00GG1BVOQ | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #2,817 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Lawn Mower Spark Plugs | | Brand Name | Briggs & Stratton | | Compatible with Vehicle Type | Lawn Mower | | Core Material | Copper | | Customer Reviews | 4.7 4.7 out of 5 stars (2,969) | | Item Weight | 3.04 ounces | | Manufacturer | Briggs and Stratton | | Manufacturer Part Number | 491055 | | Model Number | 491055S | | OEM Equivalent Part Number | 491055 | | Thread Size | 491055 | | Top Material Type | Metal | | UPC | 704660036378 | | Unit Count | 2 Count | ## Product Details - **Brand:** Briggs & Stratton - **Core Material:** Copper - **Thread Size:** 491055 - **Top Material Type:** Metal - **Vehicle Service Type:** Lawn Mower ## Images ![491055-2pk Spark Plug (2 Pack) Replaces 805015/72347/491055/Champion RC12Y - Image 1](https://m.media-amazon.com/images/I/614czG6sC6L.jpg) ## Questions & Answers **Q: Have a 2012 troybuilt riding mower with a 17.5 hp engine. what spark plug does it take?** A: you need model # of mower and type of engine, ie: Kohler, Braggs, Honda, etc **Q: Does this replace rc12yc?** A: No the thread portion is to long **Q: Will this fit a john deer js40 self propelled walk behind mower?** A: Yes, I think the B&S 491055S will fit the John Deere JS40 mower. The John Deere part number for the JS40 spark plug is M78543 (JD Model JS40 maintenance sheet). I found 4 replacement plugs for the M78543 spark plug from a cross-reference website: Brisk 1326, Brisk DR17YC, Champion 71, and Champion RC12YC. It is important to measure the length of the threads on the original spark plug and compare it to the new or replacement plug. If the threads are too long you run the risk of the piston impacting the bottom of the spark plug; ruining your engine. I've used the Champion RC12YC on my JD E100 riding mower that has a B&S engine with the B&S 491055S spark plug. The Champion RC12YC is one of the replacement spark plugs for the 491055S. **Q: Are these spark plugs b&s plugs or off brand plugs? thank you be safe out there** A: Hi they are briggs and Stratton brand. ## Frequently Bought Together - Briggs & Stratton 491055S - 2 Pack - Briggs & Stratton 696854 Oil Filter Replacement for Models 79589, 92134GS, 92134 and 695396 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/13521976-491055-2pk-spark-plug-2-pack-replaces-805015-72347-491055](https://www.desertcart.us/products/13521976-491055-2pk-spark-plug-2-pack-replaces-805015-72347-491055) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-02*